| Summary table |
|---|
| Variable |
Value |
Source |
| GRB_name_Fermi |
GRB130127743 |
|
| T0 |
17:50:23.822 UTC |
Fermi_GBM |
| ra |
251.0500° |
Fermi_GBM |
| decl |
-17.0700° |
Fermi_GBM |
| pos_error |
5.68e+00° |
Fermi_GBM |
| T90 |
0.144 s |
Fermi_GBM |
| T90_error |
0.804 s |
Fermi_GBM |
| T90_start |
17:50:23.822 UTC |
Fermi_GBM |
| fluence |
2.32e-07 erg/cm² |
Fermi_GBM |
| fluence_error |
1.13e-08 erg/cm² |
Fermi_GBM |
| T100 |
0.144 s |
|
| GBM_located |
True |
|
| mjd |
56319.743331273145 |
Fermi_GBM |
| Fermi GBM table |
|---|
| GRB_name_Fermi |
GRB130127743 |
| trigger_name |
bn130127743 |
| ra |
251.0500° |
| decl |
-17.0700° |
| pos_error |
5.68e+00° |
| datum |
2013-01-27 |
| t_trigger |
17:50:23.934 UTC |
| T90 |
0.144 s |
| T90_error |
0.804 s |
| T90_start |
17:50:23.822 UTC |
| fluence |
2.32e-07 erg/cm² |
| fluence_error |
1.13e-08 erg/cm² |
| flux_1024 |
7.94e-01 erg/cm²/s |
| flux_1024_error |
1.19e-01 erg/cm²/s |
| flux_1024_time |
-6.40e-01 erg/cm²/s |
| flux_64 |
7.31e+00 erg/cm²/s |
| flux_64_error |
8.82e-01 erg/cm²/s |
| GCN 14154 table |
|---|
| GRB_name |
GRB130127A |
| GCN_number |
14154 |
| Detection_method |
Fermi GBM Det |
| t_trigger |
17:50:23.930 UTC |
| ra |
251.1000° |
| decl |
-17.1000° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 14154
SUBJECT: GRB 130127A: Fermi GBM detection
DATE: 13/01/28 18:54:47 GMT
FROM: Veronique Pelassa at UAH
V. Pelassa (UAH) reports on behalf of the Fermi GBM Team:
"At 17:50:23.93 UT on 27 January 2013, the Fermi Gamma-Ray Burst Monitor
triggered and located GRB 130127A (trigger 381001826 / 130127743).
The on-ground calculated location, using the GBM trigger
data, is RA = 251.1, DEC = -17.1 (J2000 degrees,
equivalent to 16 h 44 m, -17 d 04'), with an uncertainty
of 8.5 degrees (radius, 1-sigma containment,
statistical only; there is additionally a systematic
error which is currently estimated to be 2 to 3 degrees).
The angle from the Fermi LAT boresight is 27 degrees.
The GBM light curve shows a bright short peak and a fainter
tail, with a duration (T90) of about 0.45 s (50-300 keV).
The time-averaged spectrum from T0-0.064 s to T0+0.064 s is
best fit by a power law function with an exponential
high-energy cutoff. The power law index is -0.03 +/- 0.29 and
the cutoff energy, parameterized as Epeak, is 770 +/- 190 keV
(Castor statistics 751 for 725 d.o.f.).
The event fluence (10-1000 keV) in this time interval is
(4.9 +/- 0.4)E-07 erg/cm^2. The 64-msec peak photon flux measured
starting from T0-0.064 s in the 10-1000 keV band
is 7.4 +/- 0.9 ph/s/cm^2.
A Band function fits the spectrum equally well
(Castor statistics 750.29 for 724 d.o.f.) with Epeak= 700 +/- 210 keV,
alpha = 0.03 +/- 0.34 and beta = -2.4 +/- 0.7.
The spectral analysis results presented above are preliminary;
final results will be published in the GBM GRB Catalog."
|